add tests to .signing + z85 encoding support

tests/test_signing.py

@@ -0,0 +1,41 @@
+
+
+
+
+import time
+import unittest
+
+from suou.codecs import want_bytes, b64decode, z85decode
+from suou.iding import Siq
+from suou.signing import UserSigner
+
+
+class TestSigning(unittest.TestCase):
+    def setUp(self) -> None:
+        # use deterministic secrets in testing
+        self.signer = UserSigner(
+            z85decode('suou-test!'), # master secret
+            Siq(1907492221233425151961830768246784), # user id
+            b64decode('e7YXG4ob22mBCxoPvgewlAsfiZE2MFu50aP_gtnXW2v2')
+        )
+    def tearDown(self) -> None:
+        ...
+
+    def test_UserSigner_token(self):
+        # self coherence test
+        TIMESTAMP = 1757426896
+        with self.assertWarns(UserWarning):
+            tok = self.signer.token(test_timestamp=TIMESTAMP)
+        self.assertIsInstance(tok, str)
+        self.assertEqual(tok, 'AF4L78gAAAAAAAAAAAAA.aMA00A.0au9HDfOJZv-gpudEevT6Squ8go')
+
+        tok2 = self.signer.token()
+        tim = int(time.time())
+        if tim != TIMESTAMP:
+            self.assertNotEqual(tok2, tok)
+
+        tokp = UserSigner.split_token(tok)
+        self.assertEqual(tokp[0], z85decode('0a364:n=hu000000000'))
+        self.assertEqual(tokp[1], TIMESTAMP)
+
+